Roll overs and vibrations

Submitted: Thursday, Aug 31, 2006 at 17:48
ThreadID: 37289 Views:2250 Replies:4 FollowUps:9
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Hi all
I have a 93 GQ/Mav LWB.First I was wondering how effective are cargo barriers in a roll over. I cant see them being of any great help.My truck has a wheel base of 1900 mm as I have 33s at 12 inches wide.It looks very stable but I was considering a roll bar just to be sure.You hear some horror stories about how unstable 4wds are and the statistics seem to support this.I also have body spacers of 3 ". I don't know if this means the truck has been lifted 3" as I don't know the original size of the body spacers.This leads to my next question I feel I am getting some Tail shaft vibration above approx 70-80 km. I have checked the uni joints and cant find any play but have noticed the spine section has some twist (slack)movement.Or could it be the lift. Not sure this lift would affect a LWB in this manner.Any thoughts on either questions.
Thanks
Niffty
Perth
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Reply By: Member - Michael J (SA) - Thursday, Aug 31, 2006 at 17:59

Thursday, Aug 31, 2006 at 17:59
G'day Niffty,

No first hand knowledge of cargo barriers in roll overs..but it is a very strong marketing tool of Milford. I really believe that they would help, certainly would stop gear in the back being thrown around your head.

BTW my son is looking very seriously at a 93 Maverick, going to drive it tomorrow and check it out. From your ownership perspective any advice on hidden problems.. apart from regular service/signs of use and/or abuse etc.

Cheers
Michael
AnswerID: 192014

Follow Up By: Niffty - Thursday, Aug 31, 2006 at 19:05

Thursday, Aug 31, 2006 at 19:05
Michael
Tried to post a follow up earlier . It disappeared!
I don't think the cargo barriers are bulky enough. They may stop stuff hitting you in the head but not squashing you in a vertical direction .Ouch
With mavs/GQ check all window electrics, most suffer here.Pull up the front carpet and look for water ingression/rust.Pull out the Tail lights (easy) and look for lots of water(one side had 4 Litres) and rust.Check rear barn doors under the bottom of the rubbers for rust . found some there.Had some splitting under one rear wheel arch seam between the quarter panel and main body. Easy fixed by scraping out the compound and replacing with Sikaflex.They can split the seam between the firewall and floor pan , not the case with mine.Look under the body for major dents in the floor pan and sills . this is a pretty good indication of the type of driving it has done.Diesel motor is less prone to ware than petrol.Get it checked out mechanically.Problems only surface once you have payed. How much are you looking at spending? Im sure there was more in my first follow up but I just cant remember.And yes expect drivers and rear barn door hinges to be worn.
Niffty
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FollowupID: 449897

Follow Up By: Member - Michael J (SA) - Friday, Sep 01, 2006 at 07:51

Friday, Sep 01, 2006 at 07:51
Thanks for that Niffty,

Going to have a good look today, car yard price just under 10k but research tells me that there is a 'bit of fat' built into that price..just have to see what happens.

Cheers
Michael
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FollowupID: 449947

Follow Up By: Niffty - Friday, Sep 01, 2006 at 13:13

Friday, Sep 01, 2006 at 13:13
Michael
If you do get the Mav I have thought of a few other things you may want to rectify to stop water entry.Its my pet hate. BTW I paid $6.500 for mine and its done 200,000 KM Td 42 engine.Its in real good shape body wise with ARB bull bar/side steps,2 brand new BFG 33 12.5 inch tyres, others are about 50% worn.Had to sort out the exhaust as it was loose and few other maintenance things ETC.Just post a follow up.
Good luck
Niffty
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FollowupID: 450007

Reply By: Member - Brian (Gold Coast) - Thursday, Aug 31, 2006 at 19:15

Thursday, Aug 31, 2006 at 19:15
I can tell you they help!

I've seen it!

Cheers

Brian
AnswerID: 192034

Follow Up By: Niffty - Thursday, Aug 31, 2006 at 19:28

Thursday, Aug 31, 2006 at 19:28
Yep I remember seeing a picture on this forum a few weeks ago.But it still worries me!and I don't want to be the one to do the crash test dummy job.I will contact the supplier for some tech info.And then price a roll bar which could still be used as a dual purpose roll bar cargo barrier.
niffty
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FollowupID: 449900

Follow Up By: cokeaddict - Thursday, Aug 31, 2006 at 21:47

Thursday, Aug 31, 2006 at 21:47
YEs they help...if fitted properly, but they r not designed for that. Their sole purpose is to stop things hitting u in the head incase of a front on collision or hard braking.
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FollowupID: 449921

Follow Up By: Member - Brian (Gold Coast) - Friday, Sep 01, 2006 at 05:47

Friday, Sep 01, 2006 at 05:47
Ange is on the money.... they are NOT designed for that, but as I said, I have seen first hand that they do help! Don't depend your life on it though....
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FollowupID: 449937

Reply By: Barnesy - Friday, Sep 01, 2006 at 04:19

Friday, Sep 01, 2006 at 04:19
I they're secured properly to the car then surely they would provide more strength than nothing. As others have mentioned they are not designed for this.

Off the track a bit but I personally think it's irresponsible for Milford to advertise cargo barriers as helping in a rollover. It's slightly misleading. They should only advertise for the specific purpose for which they were designed for. Preventing things from whacking you in the back of the head. If it helps in a rollover then good, but it shouldn't be the basis of their advertising. Just my humble opinion.
AnswerID: 192077

Reply By: Robin - Friday, Sep 01, 2006 at 08:36

Friday, Sep 01, 2006 at 08:36
Hi Nifty

Cargo barriers are a mixed blessing as per other posts.
If taking no other action I would fit one in a GQ and remove the wire screen.
This is because in some circumtances having a cargo barrier can increase the
likely hood of an accident because they encourage high loading of the
rear of vechile which is just the worst place to add weight inside a wagon.
On top of this they restrict rear vision.

I would carry weight on the roof -forward of the C pillar before fitting
a cargo barrier, but if you do please pack only light weight things above
the sill line.

If your type that doesn't tie things done though then they are good idea
as per other posts.

The Gq has relatively weak roof structure and a worse front/back weight ratio than
a GU, and needs strengthing, but your better off to get a purpose built roll
bar even just for back C piller area.

Widening your track is good but I would be wary of raising suspension height to
much, just using bigger tyres is the way I go to reduce risk of rollovers at
the expense of more dings underneath.

Robin Miller
AnswerID: 192101

Follow Up By: Niffty - Friday, Sep 01, 2006 at 13:24

Friday, Sep 01, 2006 at 13:24
Thanks Robin
When you refer to the C pillar I assume that's the pillar between the front and back doors?I have a tracklander roof rack which is a fantastic piece of gear but only fit this to the Truck for longer trips. The rack only has 3 sets of legs and I place the centre legs over the C? pillar so most of the weight is between both axle's.A good idea?
Niffty
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FollowupID: 450009

Follow Up By: Robin - Friday, Sep 01, 2006 at 14:23

Friday, Sep 01, 2006 at 14:23
Hi Nifty
No thats the second pillar or "B" pillar. C pillar is 3rd one more or less in line with back of passenger seat.

Yes put all heavy things between the axle's, good idea.

The real problem is that emergency issues tend to see people braking hard and getting offline , as car gets offline (back coming out) weight at rear causes twisting action which is bad news.
However to make things worse the twisting action occurs around the cars roll centre axis which is above the axles and generally higher at the rear for loaded
wagons, hence you roll as you twist.

On some types of vehicles (good example is small buses- not dissimilar to 4wd wagons) the vehicle design has become such a disgrace that passengers are
banned from using seats behind the rear axle by USA saftey organizations and others.

The long wheelbase of Patrols helps in this area.

Robin Miller

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FollowupID: 450024

Follow Up By: Niffty - Friday, Sep 01, 2006 at 15:24

Friday, Sep 01, 2006 at 15:24
Thanks Robin
Very informative post.I had considered some of the points you raised a while back and removed the the 3rd row seats of the wagon.My main reasons being they wasted space(and higher level added weight) and I was trying to compensate for the huge long range tank fitted.I normally only carry 75-100 for day to day purposes, not long range off road.The tank is situated quite low in reference to the rear axles (roll axis) but I can see the potential pendulum affect when getting out of shape(off line).These factors kept in the back of the mind can help greatly when such situations may occur.
Thanks
Niffty
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FollowupID: 450041

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